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Use nvinfo package from go-nvlib

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Signed-off-by: Evan Lezar <elezar@nvidia.com>
This commit is contained in:
Evan Lezar 2022-08-08 17:11:42 +02:00
parent ffd6ec3c54
commit a9dc6550d5
3 changed files with 6 additions and 69 deletions
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6
internal/info/auto.go
View File

@ -16,6 +16,8 @@
package info
import "gitlab.com/nvidia/cloud-native/go-nvlib/pkg/nvinfo"
// Logger is a basic interface for logging to allow these functions to be called
// from code where logrus is not used.
type Logger interface {
@ -32,10 +34,10 @@ func ResolveAutoMode(logger Logger, mode string) (rmode string) {
logger.Infof("Auto-detected mode as '%v'", rmode)
}()
isTegra, reason := IsTegraSystem()
isTegra, reason := nvinfo.IsTegraSystem()
logger.Debugf("Is Tegra-based system? %v: %v", isTegra, reason)
hasNVML, reason := HasNVML()
hasNVML, reason := nvinfo.HasNVML()
logger.Debugf("Has NVML? %v: %v", hasNVML, reason)
if isTegra && !hasNVML {

65
internal/info/info.go
View File

@ -1,65 +0,0 @@
/**
# Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
**/
package info
import (
"fmt"
"os"
"strings"
"github.com/NVIDIA/go-nvml/pkg/dl"
)
// HasNVML returns true if NVML is detected on the sytems
func HasNVML() (bool, string) {
const (
nvmlLibraryName = "libnvidia-ml.so.1"
nvmlLibraryLoadFlags = dl.RTLD_LAZY
)
lib := dl.New(nvmlLibraryName, nvmlLibraryLoadFlags)
if err := lib.Open(); err != nil {
return false, fmt.Sprintf("could not load NVML: %v", err)
}
defer lib.Close()
return true, "found NVML library"
}
// IsTegraSystem returns true if the system is detected as a Tegra-based system
func IsTegraSystem() (bool, string) {
const tegraReleaseFile = "/etc/nv_tegra_release"
const tegraFamilyFile = "/sys/devices/soc0/family"
if info, err := os.Stat(tegraReleaseFile); err == nil && !info.IsDir() {
return true, fmt.Sprintf("%v found", tegraReleaseFile)
}
if info, err := os.Stat(tegraFamilyFile); err != nil || info.IsDir() {
return false, fmt.Sprintf("%v file not found", tegraFamilyFile)
}
contents, err := os.ReadFile(tegraFamilyFile)
if err != nil {
return false, fmt.Sprintf("could not read %v", tegraFamilyFile)
}
if strings.HasPrefix(strings.ToLower(string(contents)), "tegra") {
return true, fmt.Sprintf("%v has 'tegra' prefix", tegraFamilyFile)
}
return false, fmt.Sprintf("%v has no 'tegra' prefix", tegraFamilyFile)
}

4
internal/modifier/tegra.go
View File

@ -18,15 +18,15 @@ package modifier
import (
"github.com/NVIDIA/nvidia-container-toolkit/internal/discover"
"github.com/NVIDIA/nvidia-container-toolkit/internal/info"
"github.com/NVIDIA/nvidia-container-toolkit/internal/lookup"
"github.com/NVIDIA/nvidia-container-toolkit/internal/oci"
"github.com/sirupsen/logrus"
"gitlab.com/nvidia/cloud-native/go-nvlib/pkg/nvinfo"
)
// NewTegraPlatformFiles creates a modifier to inject the Tegra platform files into a container.
func NewTegraPlatformFiles(logger *logrus.Logger) (oci.SpecModifier, error) {
isTegra, _ := info.IsTegraSystem()
isTegra, _ := nvinfo.IsTegraSystem()
if !isTegra {
return nil, nil
}